android_system_core/libunwindstack/include/unwindstack/DexFiles.h
Christopher Ferris 4aec66e810 Fix memory leak in UnwinderFromPid object.
Actually make the destructor virtual so that objects in
UnwinderFromPid get freed.

Also, explicitly make the DexFiles and JitDebug destructors virtual.

Bug: 123099840

Test: Ran UnwindTest.local_from_pid thousands of times.
Change-Id: I8bf11c0eb3587fa82f5f14f4723ea5c91da0fd46
2019-01-23 09:49:28 -08:00

79 lines
2 KiB
C++

/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _LIBUNWINDSTACK_DEX_FILES_H
#define _LIBUNWINDSTACK_DEX_FILES_H
#include <stdint.h>
#include <memory>
#include <mutex>
#include <string>
#include <unordered_map>
#include <vector>
#include <unwindstack/Global.h>
#include <unwindstack/Memory.h>
namespace unwindstack {
// Forward declarations.
class DexFile;
class Maps;
struct MapInfo;
enum ArchEnum : uint8_t;
class DexFiles : public Global {
public:
explicit DexFiles(std::shared_ptr<Memory>& memory);
DexFiles(std::shared_ptr<Memory>& memory, std::vector<std::string>& search_libs);
virtual ~DexFiles();
DexFile* GetDexFile(uint64_t dex_file_offset, MapInfo* info);
void GetMethodInformation(Maps* maps, MapInfo* info, uint64_t dex_pc, std::string* method_name,
uint64_t* method_offset);
private:
void Init(Maps* maps);
bool GetAddr(size_t index, uint64_t* addr);
uint64_t ReadEntryPtr32(uint64_t addr);
uint64_t ReadEntryPtr64(uint64_t addr);
bool ReadEntry32();
bool ReadEntry64();
bool ReadVariableData(uint64_t ptr_offset) override;
void ProcessArch() override;
std::mutex lock_;
bool initialized_ = false;
std::unordered_map<uint64_t, std::unique_ptr<DexFile>> files_;
uint64_t entry_addr_ = 0;
uint64_t (DexFiles::*read_entry_ptr_func_)(uint64_t) = nullptr;
bool (DexFiles::*read_entry_func_)() = nullptr;
std::vector<uint64_t> addrs_;
};
} // namespace unwindstack
#endif // _LIBUNWINDSTACK_DEX_FILES_H